Lock and latch mechanism



Oct. 28, 1930. H. HANSEN v 1,779,539

' LOCK AND. LATCH MECHANISM Filed April 4, 1923 4 sh ts-sheet 1 awwemtoz 7 9391 Gwen W1 4 Oct. 28, 1930.

H. HANSEN LOCK AND LATCH MECHANISM 4 Sheets-Sheet 2 Filed April 4, 1923' 4 Sheets-Sheet 3 (inventor Oct. 28, 1930. H. HANSEN LQCK AND LATQH MECHANISM Filed April 4, 1923 Oct. 28, 1930. HANSEN 1,779,539

00K AND LATCH MECHANISM Filed April 4, 1923 4 Sheets-Sheet 4 HERMAN H NSEN,

Patented Oct. 28, 1930 nrreesrAres FATE-T arms or YNEWYYORK, N. .Y., ASSIGNOR TO rnANoIs KEIL & soN, INC., A

' oonroRA'rIoN on NEW YORK- LOCK AND LATCH MECHANISM Application filed April 4,

This invention. relates to lock construction and, with regard to certainlfeatures thereof to a lock construction provided with a latch and a bolt or bolts.

One of the objects of the-invention is to provide a lock construction which is thoroughly practical" and highly efficient and secure. Another object is to provide a highly efficient lock construction wherein abolt is projected and a transverse projection on the bolt is thrown into locking-position in such manner as to prevent direct'withdrawal ofthe bolt. Another object is to provide a lock construe-7 tion wherein bolts are provided to coact with a latch in a dependable manner and'in 'a compact structure.

A further object of the invention is the provision of a clock and latch mechanism which is so constructed'that a bolt operated thereby is extended and rotated to prevent a direct withdrawal, and so that the latch may be operated independently of the bolt from one side of the lock and in conjunction with the bolt from the other side of the lock. Other objects will be in part obvious or in part pointed out hereinafter. V

The inx' 'ention accordingly consists in the features of construction, combinations of elements, and arrangementsof parts as will be exemplified in the structure to be hereinafter described and the scope of the application of which willbe indicated in the following claims. I In the accompanying drawings, in which shown onelof the various possible'embodi of this invention, I l

1 Figure 1 is a perspective view of the lock mac anism mounted in position upon'a door; igure 2Iis a view ofthe lock mechanism vnrthe side opposite that seen in Figure the rear wall or cover plateof the casing e removed and the parts being shown ina on in which the bolts are retracted and thelatch is operative; y l r s Figure 3 is a view similar to Figure 2showing the bolts pro ected but not swung into final locking position; 7 t

Figure 4 is a viewsimilar to Figures 2 and V3 showmg the bOltS'ln final locking position;

1923; serial No. 629,774.

" Figure 5 shows the inner side of a portion of the rear wall or cover plate;

Figure 6 is a section taken substantially asindicated by the line 6-6 in Figure 2; Figure 7 is a sectiontaken substantially as indicated by'the line 77 of Figure 2; Figure 8 is'aperspective View of a portion of the latch operating -1nechanism';:

Figure 9 is a: perspective view of a bolt anda portion of its operating mechanism; .Figure 10 is a view similar to Figures 2, 3 and 4:, but with the bolts and "portions of the mechanism removed to better show the latch; 5 Figure 11 is a view similar to-Figure 10 showing the latch retracted, and

. Figure 12'is a section taken substantially as indicatedby the line 12-12 in Figure 10.

Similar reference characters refer to similarp'arts throughout'the several viewsof the drawings. V T 7 Referring now to the drawings in detail,

and first to Figure 1, there is shown a casthe door. edge. In the wall 52 are provided openi11gs54= and 55'for thepassage of a pair of bolts 20 and 21 respectively, and an opening 56 for the passage of a lat-ch 27. In Figure. 1 'thebolts 20 and 21'and the latch 27 are shown in their extended positions and, in this position; they are adapted to enter asuitable keeper positioned on the door frame and shown, for example, in dotted lines at 57 in Figure l. The side of the casing opposite the wall 51, and what may be termedthe rear side since it faces toward the door 53,-is closed by a removable cover plate 58, a portion of which is shown in Figure 5. 'Referring to Figure 6, there is formed throughthe door a passage 59 in which is secured, by anysuitablemeans, a cylindrical the proper key is inserted and rotated within the barrel, a projecting arm or bar 2 is rotated thereby. The barrel and tumbler mechanism are not shown in detail herein since they may take any well-known form.

As shown in Figures 5 and 6, in the wall or plate 58 of the lock casing there is rotatably supported a crank arm 4 having therein and extending transversely across its axis of rotation, a slot 3. The end of the arm or bar 2 enters the slot 3 and thus, when the key 1 is turned, the crank arm 4 is rotated. The crank arm 4 is positioned on the inner side of the wall 58 and at its outer end is provided with a projecting crank pin 5 which engages with the lock mechanism within the casing to operate the same when the key 1 is turned, as will be described more fully hereinafter.

Referring now to Figure 2, the bolts 20 and 21 are connected at their inner ends to a flange 12 which is provided upon the end of a sliding plate-like member 8. The inner ends of the bolts have reduced portions which extend through openings in the flange 12 and are rotatably held therein by means of a plate 12 which is secured against the face of the flange 12 as by means of screws 12'. The connections between the bolts 20 and 21 and the flange 12 of the plate 8 are not shown in detail herein since they are preferably substantially the same as the corresponding connections provided in my co-pending application Serial No. 568,724, filed June 16, 1922, to which reference may be had for this feature. As shown in the co-pending application mentioned, the bolts 20 and 21 are connected to the flange 12 of the plate member 8 to move with the sliding plate member and to rotate relative tocthe plate about their respective longitudinal axes.

Still referring to Figure 2, the sliding member or plate 8 is slidable in the casing in a direction lengthwise of the bolts and is guided in its sliding movements bv suitable supports 9 and 10 which have portions extending upwardly about the edges of the plate 8, as is shown in Figure 6. Thus, a sliding movement of the plate 8 in one direction or the other projects or retracts the bolts 20 and 21.

Positioned upon the sliding plate member 8 is another plate member 7 a which may be termed an auxiliary slide or auxiliary sliding plate. This member 7 is slidable upon the plate member 8 in the direction of movement of the plate member 8 and it has a pair of projecting arms 14 and 15 which extend through openings in the flange 12 and the plate 12". The end of the arm 14 has a projecting lug 16 which rests in a spiral slot formed in the surface of the bolt 21; the arm 15 has at its end a projecting lug 17 which rests in a spiral slot 19 formed in the bolt 20. By reason of these spiral slots and the engagement therewith of the lugs 16 and 17 when the plate 7 is moved relative to the plate 8, the bolts 20 and 21 are rotated about their longitudinal axes.

As shown in Figure 2, carried by the slide or plate member 7 is a transversely extending member 7 in the shape of a relatively narrow plate. This member 7 is supported by the member 7 for sliding movement therein transversely of the member 7 and is guided and held in position in its sliding movement by means of flanges 7 and 7 formed on the member 7 The member 7 has formed thereon a flange 6 against which a spring 6*" bears, tending to hold the sliding member 7 in the position shown in Figure 2, with respect to the plate member 7. The spring 6*- is coiled about and supported by a pin 7 projecting from the plate member or slide 7 The spring 6 thus moves with the slide 7 and bears continually against the sliding member 7. As shown in the drawing, the plate 8 and the auxiliary plate 7 slide in a horizontal direction and the men1- ber 7 slides in a vertical direction, but it is, of course, to be understood that the horizontal and vertical directions depend upon the position in which the lock mechanism is supported.

As shown in Figure 2, the member 7 is engaged by a pin 25. Referring to Figure 6, this pin 25 is a crank pin projecting from a crank 24 (shown in Figure 4) and it passes through a slot 7 formed in the plate 8 and through a slot 7 formed in the plate 7 to enter at its end into engagement with the sliding member 7. The crank 24 is positioned adjacent to the inner side of the front wall 51 of the casing and is rotatably supported in this wall and connected to be turned by a handle 26 on the outer side of the casing.

In Figure 2 of the drawings the mechanism is shown in the position in which the bolts 20 and 21 are retracted or withdrawn into the casing. By turning the handle 26, thereby rotating the crank arm 24, the crank pin 25 moves the sliding member 7 toward the position shown in Figure 3 and also, acting either through the member 7 or through the walls of the slots 7 or 7 moves the slides 8 and 7 together in a direction to project or extend the bolts 20 and 21. When the slides 8 and 7 a reach substantially the position shown in Figure 3, the end flange 12 of the slide 8 comes against a projection 42 on the inner end of the latch 27 and the movement of the slide 8 is thereby arrested. The bolt 21 is provided with a projection 13 which rides along the surface of a lug 18 formed on the casing and positively prevents rotation of the bolts during this above described portion of the movement. When the bolts reach the position shown in Figure 3, the projection 13 has reached the end of the lug 13 and the bolts are therefore now free to rotate. Upon further rotation of the crank arm'24, by means of the handle 26, theslide 7 advances relative to the now stationary sliding plate 8, and'tl'ie lugs 16 and 17, operating in the slots 18' and 19, rotate the bolts. This relative movement between the plate 7 and the plate 8 continues until the parts reach the position shown in Figure 4 in which the bolts 20 and 21. are fully extended and rotated into final locking position.- The bolts are provided at their outer ends with transverse projections 22 and During the projecting movement of the bolts, caused by movement of the slide 8 as above described, the projections-22 and 23 are lined up so that the boltends-willenter thekeeper 57 on the door frame. The rotation of the bolts,.occurring after they have entered the keeper, turns the projections 22 and 23. to suchv positionthat the boltscannot be directly withdrawn from the keeper but must first be rotated.

In retracting the bolts by means of the handle 26, the crank arm 24, by means of the crank pin 25, first moves the slide 7 inwardly with respect to the slide 8., thereby rotating the bolts. Vhen the parts reach the position shown in Figure 3, further rotation of the crank arm 24, by means of the handle 26, moves the slide 8 to retract the bolts iiito the position shown in Figure 2. It may be here noted that the slot 7 formed in the slide Sis shaped preferably as shown in my copending application above-mentioned, to permit movement of the slide 7 by means of the crank pin 25 without causing movement of the sliding plate 8. f v V Referring-now to Figure 6, the transverselyslidingmember 7 has at one end a'bent over flange. -11. When the bolts are in retracted position, asshown in Figure 2, this flange, 11 rests. against the right-hand end (as viewed inthe drawing) of'the' flange 9 of the casing. 7 Thelmember 7 thus locks the sliding plates against'moveme'nt ina direction to extend the-bolts and therefore locks the bolts intheir retractedposition. NVhen the bolts are extended. asshown in Figure'4, the flange ll'drops in position against-the left-hand end of the flange 9'and thus locks the bolts against being retracted. The member 7 being positioned upon the slide 7, which controls the rotation of the bolts, the flange 11 thereof thus locks the bolts agai'nstrotation as well as against longitudinal move ment.

The spring 6 actingagainstthetrans versely sliding member 7 and tending to hold it either in the position shown in Figure 2 or in the posit-ion shown in Figure 4, acts through the member 7' against the crank pin 25. The action of this spring is thus to oppose the rotation of the crank 24 through the first part of its rotation in either direction and thereafter to aid the remaining rotation of the. crank arm! As shown in Figure 3,

just as the rotation of the bolts is about to start, the-crank arm 24 is substantially in line with the direction :of movement of the sliding member 7, the member 7 and thecrank arm being at this point on dead center with respect tov the action of spring 6 thereon. As soon as the crank arm is'rotated slightly further the spring 6 completes its rotation and thus the spring rotates the bolts into final locking position." As the bolts are retracted, the reverse action takes place and the spring 6" serves to withdraw the bolts into final retracted position. From the foregoing the operation of the bolts from oneside of the door, by means of the handle 26, will be understood. From the other side of the doorthe bolts are operated by means of the key 1 (Figure. 6) hen the key 1 is rotated to rotate the crank arm 4, the crank pin 5 comes against the'projection or flange 6 in the transversely slidingmemher 7 (Figure2) and engages this flange 6 on the side thereof opposite the spring 6.

Along the sides of the transversely sliding member 7 adjacent to the flange 6 are apair of outstanding flanges 5 and 5 :tormed upon the slide or auxiliary sliding plate 7 Starting from the position shown in Figure 2, to

extend'the bolts by means of the key 1, the crank pin .5 rotates with the crankfto first force the slidingmember '7' upwardly (as viewed in the drawings) toward the position shown in Figure 3; the crank pin 5 then acts against the flange 5 to force the slides 7 a and8 together in adirection to eXtend the bolts, as shown in Figure '3. Upon further rotation of the crank 4, the crank pin5 acts against the flange 5 to move the plate 7 a relative to the plate 8 and rotate the bolts as has been described hereinbefore, the spring 6 aiding this action to rotate the bolts into final locked position. When the bolts are retracted by means of the key,'the crank pin 5 engages with the projection 6 and with the-flange 5 to eflect the retracting movement of the sliding plates. The crank 4 is mounted upon the rear cover plate 58, as shown in Figure 5 and as hereinbefore described, and is removed with the cover plate without'interfering with pr 1disrupting; the other mechanism of the oc r.

Considering now more particularly the operating mechanism for the latch 27, reference is had first to Figures 10, 11 and 12. I The latch 27 is secured toa sliding plate 28 and it is urged outwardly by a spring 41 which bears against a wall-of the casing and acts mountedupon the lock 'casingadjacent to the handle 26 anotherhandle 40. This handle 40 is rotatably mounted in the casing wall and,

as shown in Figure 10,'has a squared inner end 39 upon which is fixed a lever 88 having two oppositely extending arms 38 and 38 When the latch 27 is in extended position the arm 38 rests against a surface 28 of the plate 28 and the arm 38 rests against a surface 28 of the plate 28, the rounded middle portion 28 of the lever resting against a rounded surface 37 on the plate 28 between the two surfaces 28 and 28". By rotating the handle 40 in either direction the latch 27 is retracted by the swinging lever 38. When the handle 40 is rotated in a clockwise direction, as viewed in Figure 10, the arm 38 bears against the surface 28 to force the latch inwardly; when the handle 40 is rotated in the opposite direction, the arm 38 forces the latch inwardly, as shown in Figure 11.

The sliding plate 28, carrying the latch, is proi ided with an arm 29 projecting along the casing adjacent one side thereof. In the end wall of the casing is a pin 34 which is slidable in a vertical direction (as viewed in the drawings) and has at its outer end a knob, as shown in Figure 12. Upon the pin 34, within the casing, is mounted to slide therewith a member 32 having a part 32 which is adapted to move into the path of the arm 29. A spring 35 is secured to the member 32 and has a bent end portion 35 which engages a lug 36 on the casing wall. In the position shown in Figure 10 the member 32 is inoperative, and is held in this position yieldingly by the spring 35. By means of the knob 34 the member 32 may be moved so that the part 32- comes into the path of the arm 29 and thereby locks the latch 27 against being retracted. In the arm 29 there is provided a notch 31 which comes opposite the part 32 when the latch is retracted or withdrawn into the casing. By retracting the latch, as by means of the handle 40, and then moving the member 32 into engagement with the notch 31, the latch 27 is locked in its retracted position.

As shown in Figure 2, the arm 29 extends alongside the sliding plates 8 and 7. Projecting from the slide or auxiliary sliding plate 7 is a pin 43 upon which is pivoted a lever 43 having an arm 44 and an arm 45. Pivoted upon a pin 47, projecting from the slide 72 is a lever 47 having an arm 46 and an arm 48. The lever arm engages with the lever arm 46, and the lever arm 48 engages with a flange 30 projecting from the end of the arm 29.

As the crank arm 4 is moved by the key 1 to withdraw or retract the bolts 20 and 21, the crank pin 5 bears against the flange 6 of the transversely sliding member 7 and then 7 against the flange 5 of the slide 7, as hereinthe lever arm 45 swings therewith and swings the lever 47 in a counter-clockwise direction, the lever arm 48 moving the arm 29 rearwardly and hence retracting the latch 27. The spring 6 has a portion 6 which bears against the lever arm 44 tending to swing this arm in a counter-clockwise direction against the action of the key-operated means and normally holds the lever arms in the position shown in the drawings. Thus, by a single continuous rotation of the key, the bolts and the latch are retracted in succession.

It will be noted that the latch can be retracted by means of the key or by means of the handle 40 only when the bolts are in retracted position. When the bolts are extended, the lever arm 48 is out of position to coact with the flange 30 of the arm 29; when the bolts are retracted the lever arm 48 and the flange 30 come into operative relation. It will be seen that the multiplication of leverage provided by the various lever arms causes full retracting movement of the latch 27 for a relatively much smaller movement of the lever arm 44.

Thus. from one side of the door, by turning the proper key 1, the bolts are projected and rotated or swung into final locking position. In order to unlock the door from this same side, the key 1 is turned to first rotate the bolts and retract them and then, by continuing the turning of the key in the same direction, the latch 27 is retracted. On the other side of the door the bolts are extended and retracted by means of the handle 26, and the spring-pressed latch is retracted by means of. the handle 40. On this latter side of the door there is provided the knob 34 by means of which the latch 27 may be locked against retracting movement. Thus, if the locking device 32, operated by the knob 34, is operated, the latch cannot be retracted from the other side of the door and hence the door cannot be opened even with the aid of a key.

This lock mechanism provides great security, and forcing of the look by means of various tools is dependably guarded against. When the bolts are extended as shown in Figure 3, the lug 13 on the bolt 21 is in position against the end of the lug 13 of the easing to prevent direct withdrawal of the bolts; the lugs or T-heads 2223 of the bolts are rotated into such position that the bolts cannot be separated from the keeper without first accomplishing a rotation thereof; the bolts cannot be rotated because the slide or auxiliary plate 7 is rigidly locked against sliding movement; moreover, when the bolts are in the extended or operative position shown in Figure 3, the spring-pressed latch 27 cannot be retracted without first retracting the bolts. As shown in Figure 1, the bolts are preferably provided with hardened steel cores or centers 59 and 60 so that they cannot be sawed through. On the other hand, the

lock. mechanism. operates freely and easily when actuated properly by a proper keyor by the handles 26 and 40. The structure is simple and compact and the latch-operating, parts coact with. the bolt-operating parts in,

' an efiicient and thoroughly dependable man ner. It is to be understood, of course, that the number of bolts employed mayvary.

As many possible embodiments" may be made oif'the above invention and as many changes might be made in the embodiment above set forth, it is'to be understood that all matter hereinbefore set forth or shown .in

the bolt and the latch by the turning of the key. V q.

2. A lock having a rotary and sliding bolt and a latch means on one side of the lock for withdrawing the latch; independent means on the same side for rotating and withdrawing the bolt; and a key and tumblers on the other side of the lock for withdrawing the bolt and the latch in succession by the turning of the key.

3. A lock havinga rotary and slidingbolt';

a latch independent of the bolt and adjacent V thereto, and a handle for turning the latch means forv extending and rotating the bolt; and a rotary member operable to withdraw the bolt and the latch by a continuous rota tion of said member.

4. A lock having abolt; a latch independent of the bolt and adjacent thereto, and a handle for turning the latch; means for extending and rotating the bolt; and a rotary member operable to withdraw thebolt and the latch, respectively, in succession by a continuous rotation of said member.

5. A lock' having a bolt and means'for .extending and rotating the-bolt; said means comprising main and auxiliary sliding plates and a spiral connection between same and said bolt; said auxiliary plate being provided with a groove, an actuating arm, a slidable member positionedwithi-n the groove and en gaged by a pin on the actuating arm.

6. A lock having a bolt andmeans for ex'- tending and rotating said bolt, comprising.

main and auxiliary sliding plates and a spiral connection between the same and said belt; a groove in the auxiliary plate and a 'slidable member positioned within the groove; an actuating arm having a pin in operative relationship with said slidable member; a de pending lug on said sliding member and an abutment on the lock easing, said depending rotary and sliding bolt:

7 A look having a bolt and bolt extending,

and rotating devices for operating the same, comprising main and auxiliary sliding plates; a spiral'connection between the same and said; bolt in the form of a spiral guideway on said bolt; an extensionon said auxiliary sliding plate'engaging with said guide-- way; and a stop positioned to contact with the mainsliding plate.

8., A lock having a bolt and and rotating devices for operating the same, comprising main and auxiliary sliding plates; a spiral connection between the same and said bolt in the form of aspiral gui-deway on said bolt; an extension on said auxiliary. sliding plate engaging with said guideway; a latch in the lock casing; and a stop on the latch said stop being positioned to contact with the main sliding plate. i 4

' 9. Ina lock: a main sliding plate carrying a rotatable bolt an auxiliary sliding plate having means for rotatingthe bolt; a rotatable member on theoutside of the lock, 11w, ing means for engaging and sliding the auxil-,. iaryp'late tooperate said bolt; a latchinde pendent of. the bolt and adjacent thereto having an extending arm; means on the auxiliary pl ate'operabl'e tomove said arm and withdraw the latchztand means to turnthe latch independently of said bolt.

10. In a lock a main sliding plate carrying a rotatable .bolt, having a spiral guideway; an auxiliary sliding-plate having an arm carrying a lug adapted to. travel invsaid guide way and rotate the bolt; a. rotatable actuating member on the outside of the lock, having means for engaging and sliding the auxiliary plate to operate said bolt; a latch ha ing an. extending arm, means on the auxiliary plate engageable by means on said rotatable member and operable to move said arm and with-draw the latch.

11. In a lock: a main sliding plate carrying a rotatable bolt, havinga. spiral guideway; an auxiliary sliding plate having an arm carrying a lug adapted totravel: in said guideway and. rotate the bolt; a rotatable actuating member on the outsidefof the lock, having means. for engaging and sliding the auxiliary plate to operate said bolt; azlatch having an extending arm; means on the auxiliary plate engageable by means on said rotatable member and operable to move said arm and withdraw the latch by a continuous rotation of said actuating member.

12. In a lock: a main slidingplate carrying a rotatable bolt having a spiral guideway thereon; an. auxiliary sliding plate having an extending arm carrying alug adapted to travel in said guideway in order to rotate. said bolt a rotatable actuating member, 011 the outside of the. lock, having means for enbolt extending gaging and sliding the auxiliary plate to op erate said bolt; a latch having an extending arm and having a lug to limit movement of the main sliding plate; means on the auxiliary plate engageable by means on said rotatable member and operable to move said arm and withdraw the latch.

' 13. A look having a bolt and tumbler means for moving the same, comprising a vertically sliding member adapted to be operated by a key and a horizontally sliding plate movable relative to said bolt and adapted to be operated by the vertically sliding member to move the bolt horizontally.

1.4. A lock having a bolt and tumbler means for moving the same, comprising a vertically sliding spring pressed member adapted to be operated by a key and a horizontally sliding plate movable relative to said bolt and adapted to be operated by the vertically sliding member to move the bolt horizontally.

15. A lock having a bolt and tumbler means for moving the same, comprising a vertically sliding member adapted to be operated by a key and a horizontally sliding plate movable relative to said bolt and adapted to be operated by the vertically sliding member to more the bolt horizontally, said vertically sliding member being adapted to act as a detent to lock the parts in position.

16. A lock having a means for moving the same, comprising a vertically sliding spring pressed member adapted to be operated by a key and a horizontally sliding plate movablerelative to said bolt and adapted to be operated by the vertically sliding member to move the bolt horizontally, said vertically sliding member being adapted to act as a detent to lock the parts inposition.

17. A look having a casing, a bolt and tumbler means for moving the same, com prising a vertically sliding member adapted to be operated by a key and a horizontally sliding plate movable relative to said bolt and adapted to be operated by the vertically sliding member to move the bolt, said vertically sliding member being adapted to act as a detent in cooperation with the lock casing to lock the parts in position.

18. A look having a casing, a bolt and tumbler means for moving the same, comprising a vertically sliding spring pressed member adapted to be operated by a key and a horizontally sliding plate movable relative to said bolt and adapted to be operated by the vertically sliding member to move the bolt, said vertically sliding member being adapted to act as a detent in cooperation with the lock casing to lock the parts in position.

19. A lock having a bolt, bolt extending and rotating devices for operating the same, and spring means for rotating the bolt into final locked position and removing it into the completely withdrawn position.

bolt and tumbler 20. Alock havingab0lt,bolt extending and rotating devices for operating the same, and a single spring for rotating the bolt into final locked position and removing it into the completely withdrawn position.

21. A lock having a bolt, bolt extending and rotating devices comprising a rotatable member for operating the same, and spring means adapted to operate on said rotatable member for rotating the bolt into final locked position and removing it into the completely withdrawn position.

22. A lock having a bolt, bolt extending and rotating devices comprising a rotatable member for operating the same, and a single spring adapted to operate on said rotatable member for rotating the bolt into final locked position and removing it into the completely Withdrawn position.

28. A lock having a bolt, and bolt extending and rotating means comprising a plate having a connection with said bolt for cansing the rotation of said bolt, an oscillating crank for moving said plate, and a spring "for causing the completion of the oscillating movement of the crank in each direction.

24. A lock having a bolt, and bolt extending and rotating means comprising a plate having a connection with said bolt for causing the rotation of said bolt, an oscillating crank for moving said plate, and a spring connected to the crank arranged so that as the effective lever arm of the crank decreases the effective arm through which the spring acts increases.

25. A lock having a bolt, means including a plate for controlling the forward direction of movement of the bolt, a sliding plate having a spiral connection with said bolt for rotating the same, and a spring means adapted to move the bolt into the completely locked and unlocked positions.

26. In lock construction, in combination, a casing, slidable and rotatable bolt therein, a plate member in said casing movable in a direction lengthwise of said bolt, means for causing said plate member and said bolt to move together throughout a portion of the movement of said plate member, thereby to extend said bolt, and adapted throughout a subsequent portion or the movement of said plate member to cause said bolt to rotate, a crank arm pivoted in a wall of the casing a projecting pin on said cra. k arm extending through a transverse slot in said plate member, spring means acting upon said pin on the side of said plate member opposite said crank and tending to rotate said crank, and means for manually turning said crank to move said plate member.

27. In lock construction, in combination. a casing, a slidable and rotatable bolt therein, a plate member in said casing movable in a direction lengthwise of said bolt, means for causing said plate member and said bolt to tenses:

plate member tocause said bolt to rotate, a

crank arm pivoted in a wall of the casii a a ro'ectin in on said crank arm extending" a P through a transverse slot in said plate mem-.

ber, a, member connected to said pin on the side of said plate member opposite said crank, spring :means acting upon said crank tending to hold said pin at one extremity of said slot, asecond crank arm pivoted'in the wall ofsaid easing .oppositesaid first walliand having a.

projecting part, means on said last member tor en aging with saldpro ectingpart of said second crank, and means operable fron'rthe exterior of the casing for turning eachiot said cranks to move said plate. membergQ l 28. In lock construction, in combination, a slidable and irotatableabolt, a .slidable. plate member forv moving said bolt, means adapted throughout aportion of the movement of said plat-eto cause said plate and said bolt to move together for extending and retractingzsaid bolt, and adapted throughout another portion of the movement of saidplate and when saidbolt is substantially fully extended to; cause saidbolt to;rotate, and springmeans acting through said plate .andtending, when said bolt issubstantiallvinlly extended, to rotate said bolt into'final locking position.

29. In lock construction, incombination', a

slidable. and rotatable-bolt, slidable plate member for movingsaid bolt, means adapt-1 ed throughout. a portion of the movement ot' said platevto cause said plate and said bolt to move together for extending and retracting said bolt, and adapted throughout another portion 01 the movement of said plate and when said bolt is substantially fullyextended to cause said bolt to rotate, and spring means acting through said plate and tending, when said bolt substantially fully extended, to rotate said bolt into final lockingposition, and tending, when said bolt approaches retracted position, to urge said bolt toward fully re tracted position. i i V 30. In-lock construction, inzcombinat-ion, a slidable and rotatable bolt, a. slidable plate member for moving said bolt, means adapted throughout a portion of the movement of said plate to cause said plate and said bolt to move together for extending and retracting said bolt, and adapted throughout another portion of the movement of said plate and When said bolt is substantially fully extended to cause said bolt to rotate, a crank arm connected to move said plate,,and spring means acting upon said crank .arm and, tending therethrough to rotate said boltinto final locking position when said bolt is substantially fully extended. r V

31. In lock construction, in combinatioma casing, a slidable and rotatable bolt therein, a

plate member in said casing movable. in a direction lengthwise of said bolt, means for causing said plate member and said bolt to move together throughout a portion of the.

-movement of said plate member, thereby to extend said bolt, and adapted throughout a subsequent portion of the movementot said plate member to cause said bolt to rotate, .a crank arm pivoted in a wall of the casing, a

projecting pin on said crank arm extending through a transverse slot in saidplate me1nber, a member mountedupon said plate member to slide thereon in a direction lengthwiseof said slot and connected to move with said pin, and spring means acting against said last slidable member and tending therethroughcto turn said crank.

32. In lock construction, in combination, a casing, a slidableand rotatable bolt therein, a plate member in said casing movable in a direction lengthwise of said bolt, means for causing said plate member and said bolt v.to move together throughout a portion: of the movement of said plate member, thereby to pin, and .said last member ha-vinguneans' adapted to: lock said bolt against movement from its final locking position; V

33. In lock constructiomin combination, a casing, a latch, spring means urging said latch toward extended position, ahandle connected to retract said latch, a slidable and rotatable bolt, means for rotating and extending and retracting said bolt, and means moving with said last means adaptedto lock said latch against retraction whenbsaid bolt is extended and rotated. a 34. In lock construction, in combination, a casing, a pair of slidable and rotatable bolts. therein, a latch positioned between said bolts, and a sliding plate for extending andretracting said bolts having projecting parts engaging with said bolts and adapted to so, tate the latter when said bolts are substantially fully extended, said. projecting parts embracing the inner end portion ofsaid latch when said bolts are extended. r l v 35; In lock construction, in combination, a latch,.a bolt, means for extending and retracting said bolt comprising a sliding plate, an arm connected to said latch and extends ing therefrom adjacent to said plate, keyoperated means for acting upon said plate to move the latter, and means positioned upon said sliding plate adapted toaengage said arm and actuatedby said key-operated means to move said arm to retract said latch.

36. In lock construction, in combination, a latch, a bolt, means for extending and retracting said bolt comprising a sliding plate, an arm connected to said latch and extending therefrom adjacent to said plate, key-open ated means for acting upon said plate to move the latter, means positioned upon said sliding plate adapted to engage said arm and actuated by said key-operated means to move said arm to retract said latch, and a locking member movable into and out of en gagement with said arm and adapted when operative to lock sai-d latch against retraction.

37 In lock construction, in combination, a casing, a latch, a bolt, means upon one side of said casing for extending and retracting said bolt and for retracting said latch, keyoperated means on the other side of said cas ing for extending and retracting said bolt and for retracting said latch, and means on said first side of said casing for locking-saizil latch against retraction.

38. In lock construction, in combination, a casing, a latch, a bolt, a slide within said casing for moving said latch, a slide within said casing for moving said bolt, means on one side of the casing for moving said latch slide, means on said side of said casing for moving said bolt slide, key-operated means on the other side of the casing for moving said bolt slide, said two slides coming into engagement to prevent movement or said latch slide when said bolt is extended.

39. In lock construction, in combination, a casing, a latch, a bolt, a slide within said casing for moving said latch, aslide within said casing for moving said bolt, means on one side of the casing for moving said latch slide, means on said side of said casing for moving said bolt slide, key-operated means on the other side of the casing for moving said bolt slide, and coacting means on said two slides coming into operative relation when said bolt slide is moved to rot 'act said bolts and connecting said latch slide to be moved by said key-operated means.

40. In lock construction, in combination, a casing, a latch, a bolt, a slide within said casing for moving said latch, a slide within said casing for moving said bolt, means on one side of the casing for moving said latch slide, means on said side of said casing for moving said bolt slide, key-operated means on the other side of the casing for moving said bolt slide, coacting means on said two slides coming into operative relation when said bolt slide is moved to retract said bolts and connecting said latch slide to be moved by said key-operated means, and means operated from said first side of said casing for locking said latch slide against movement to retract said latch.

41. In lock construction, in combination, a latch, a bolt, means for extending and retracting said bolt comprising a sliding plate, an arm connected to said latch and extending therefrom adjacent to said plate, key-operated means for acting upon said plate to move the latter, a lever pivoted upon said sliding plate adapted to engage said arm and adapted to be swung by said key-operated means to move said arm and retract said latch, and spring means urging said lever to swing against the action of said key-operated means.

42. In lock construction, in combination, a bolt, a latch, key-operated means for extending and retracting said bolt, and a swinging member positioned to be swung by said keyoperated means and connecting means between said swinging member and said latch adapted to give said latch a relatively large retracting movement in response to a relaigively small movement of said swinging mem- 43. In lock construction, in combination, a bolt, a latch, means for extending and retracting said bolt including a sliding plate slidable in a direction lengthwise of the bolt and a member movable in a direction transversely of said plate, key-operated means for moving said member and said plate, a movable member mounted upon said plate adapted to be moved by said key-operated means and connected to move said latch, and spring means upon said sliding plate acting against said transversely movable member and against said last movable member.

4A. In lock construction, in combination, a bolt, means for extending and retracting said bolt including a plate member slidable in a direction lengthwise of the bolt, a member slidably mounted upon said plate for sliding movement transversely thereof, said second member having a projecting part and said first member having a pair of flanges projecting at the sides of said second member, and a rotatable operating member having a part adapted to engage said projecting part of said transversely slidable member and said flanges of said first member to slide said members for projecting and retracting said bolt.

45. In lock construction, in combination, a bolt, means for extending and retracting said bolt including a plate member slidable in a direction lengthwise of the bolt, a member slidably monuted upon said plate for sliding movement transversely thereof, said second member having a projecting part and said first member having a pair of flanges projecting at the sides of said second member, a rotatable operating member having a part adapted to engage said projecting part of said transversely slidable member and said flanges of said first member to slide said members for projecting and retracting said bolt, and said transversely sliding member having a part adapted to come into position to lock said first sliding member against movement when the bolt is fully projected.

adapted to engage said projecting part of said transversely slidable member and said flanges of said first member to slide said members for projecting and retracting said bolt, and said transversely sliding member having a part adapted to come into position to lock said firstsliding member against movement When the bolt is fully retracted.

47. In lock construction, in combination, a

casing, a bolt, means for projecting and retracting said bolt including a plate member slidable in a direction lengthwise of the bolt, a member movable in a direction transversely of said slidable plate and connected to partake of the longitudinal movement of the latter, a handle on one side of the casing connected to move; said transversely moving member and said sliding plate to project and retract said bolt, said transversely moving member having a projecting part and said plate member having a pair of flanges-post tioned at the sides of said projecting part, and key actuated operating means on the other side of said casing having a rotatable part adapted to engage saidprojecting part and said flanges to move said transversely moving member and said sliding plate to project and retract said bolt.

48. In lock construction, in combination, a-

a member. movable in direction transversely of said slidable plate and connected to partake of the longitudinal movement of'the latter, a handle on one side of the casing connected to move said transversely moving member and said sliding plate to project and retract said bolt, said transversely moving member'having a projecting part and said plate member having a pair of flanges positionedat the sides of said projecting part, key-actuated operating means on the other side of said casing having a rotatable part adapted to engage said proj ecting part and said flanges to move said transversely .moving member and said sliding plate to project and retract said bolt, and spring means acting upon said transversely moving member tending to hold the same at one'extremity of its path of movement,

49. A lock construction, in combination, a casing, a bolt, means for projecting and re tracting said bolt including a plate member slidable in a direction lengthwise of the bolt,

a member movable in a direction transversely ofsaid slidable plate and connected to partake of thelongitudinal movement of the latter, a handle on one side of the casing connected to move said transverselymoving member and said sliding plate to project and retract said bolt, said tran versely moving member having aprojecting part and said plate member havin a pair of flanges positioned at the sidesot-said projecting part, key-actuated operating means on the other s de of said casing having a rotatable part adapted to engage said projecting part and saidfianges to move said transversely moving member and said sliding plate to project and. retract said bolt, spring means acting upon said transversely moving member tending to hold the same atone extremity of its path of movement, and fixed abutment on said casing, said transversely moving member having a part held in engagement with said abutment by said spring means to lock said sliding plate against movement.

50. In lock construction, in combination, a sliding plate, a bolt havingat its outer end a transverse projection, said bolt being carried by said sliding plate for extending and retracting movement therewi i and being pivoted upon said plate for si l ng movenient, a second plate member carried by said first plate and adapted to slide relative there to, means actuatedby sliding of said second plate relative to saidlir'st adapted to swing said bolt about its pivot, a sliding member carried by said second plate and mounted thereon for vsliding movement transversely thereof, and a rotatable crank adapte'd'upon rotation to slide said three sliding members to move said bolt longitudinally and to swing said bolt.

51. In loch construction, in combination, a sliding plate, a bolt having at'its outer end a transverse projection, said bolt being carried by said sliding plate for extending and retracting movement therewith and being pivoted upon said plate for a swinging movement, a second plate member carried by said first plate and adapted to slide relative thereto, means actuated by sliding of said second plate relative to said first adapted to swing said bolt about its pivot, a sliding mem ber carried b aid second plate and mo'untec thereon for sliding movement transversely thereof, a rotatable crank adapted upon rotatien to slide said three sliding members to mo e said bolt lon itudinall and to swing said bolt,and spring means acti tween said" second sliding plate and said transversely sliding member tending to move said plates to place the bolt in fm'a'l locking position and to withdraw the bolt into final retracted position as said crank is rotated respectively to project the bolt and to retract the bolt. V q

52-. In lock construction, in combination,

asliding plate, a bolt having at its outer end a transverse projection, said bolt being carried by said sliding plate for ei-rtending and retracting movement therewith and being pivoted upon said plate for a swinging movemen a second plate member carried by said first plate and adapted to slide relative thereto, means actuated by sliding of said second plate relative to said first ad aptcd to swing said bolt about its pivot, a sliding member carried by sa'd second plate and mounted thereon for sliding movement transversely thereof, a rotatable crank adapted upon rotation to slide said three sliding members to move said bolt loi'igitudinally and to swing said bolt, :1 fixed abutment with which said transversely sliding member comes into engagement when the bolt is extended to lock said first two sliding plates against retractive movement, and spring means tending to hold said transversely sliding member in said locking position.

53. In lock construction, in combination, a sliding plate, a bolt having at its outer end a transverse projection, said bolt being car ried by said sliding plate for extending and retracting movement therewith and being pivoted upon said plate for a swinging movement, a second plate member carried by said first plate and adapted to slide relative thereto, 11 cans actuated by sliding of said second plate relative to said first adapted to swing said bolt about its pivot, a sliding member carried by said second plate and mounted thereon for sliding movement transversely thereof, a rotatable crank add ted upon rotation to slide said three sliding members to move said boltlongitudinally and to swing said bolt, spring means acting between said second sliding plate and said transversely sliding member teiuling to move said plates to place the bolt in final locking position and to withdraw the bolt into final retracted position as said crank is rotated respectively to project the bolt and to retract the bolt, and a fixed abutment with which said transversely sliding member comes into engagement when the bolt is extended to lock said first two sliding plates against rctractivc movement.

In lock construction, in con'ibination, a casing, a slidable and rotatable bolt therein, a plate member in said casing movable in a direction lengthwise of said bolt, means for causing said plate member and said bolt to move together throughout a portion of the movement of said plate member, thereby to extend said bolt, and adapted throughout a subsequent portion of the movement of said plate member to cause said bolt to rotate, a crank arm pivoted in a wall of the casing and having a crank pin projecting through a transverse slotin said plate member, a menr ber connected to said pin on the side of said plate member opposite said crank, and spring means acting against said second-mentioned member in a direction to cause it to move lengthwise of said transverse slot and there by to act upon said crank.

, 55. In lock construction, in combination, a casing, a slidable and rotatable bolt therein, a plate member in said casing movable in a direction lengthwise of said bolt, means for causing said plate member and said bolt to move together throughout a portion of the movement of said plate member, thereby to extend said bolt, and adapted throughout a subsequent portion of the movement of said plate member to cause said bolt to rotate, a crank arm pivoted in a wall of the casing and having a crank pin projecting through a transverse slot in said plate member, a member connectedto said pin on the side of said plate member opposite said crank, and a spring carried by and movable with said plate member and acting against said second-mentioned member and through the latter tending to turn said crank.

56. In lock construction, in combination, a casing, a slidable and rotatable bolt therein, a plate member in said casing movable in a direction lengthwise of said bolt, means for causing said plate member and said bolt to move together throughout a portion. of the movement of said plate member, thereby to extend said bolt, and adapted throughout a subsequent portion of the movement of said plate member to cause said bolt to rotate, a crank arm pivoted in a wall of the casing and having a crank pin projecting through atransverse slot in said plate member, a member connected to said pin on the side of said plate member opposite said crank, guiding means on said plate member for guiding said second-mentioned member for movement transversely of the direction of movement of said plate member, and spring means for urging said second-mentioned member to slide in one direction relative to said guiding means and acting therethrough upon said crank.

57. In lock construction, in combination. a slidable bolt, a latch, a slidable plate-like member, means adapted throughout a portion of the movement of said plate-like member to cause the latter and said bolt to move together for extending and retracting said bolt and adapted throughout another portion of the movement of said member to cause said. bolt to rotate, a crank arm for actuating said plate member, means connected to said latch and adapted upon operation to withdraw said latch, and means movable with said plate member and adapted upon movement of the latter in a direction to rotate and withdraw said bolt to be positioned for engagement by said crank arm to be operated by the latter, and to be positioned to engage and operate said latch-withdrawing means.

58. In lock construction, in combination, a

IZG

casing, a slidable and rotatable bolt therein, a platelike member in said casing movable in a direction lengthwise of said bolt, means for causing said member and said boltto move together throughout 'a portion of the movement of said member thereby to extend said bolt and adapted throughout a subsequent portion-0f the movement of said plate member to cause said bolt to rotate, a latch, means operablefrom one side of said casing for actuating said plate member to control said bolt, means operable from said side of the casing for retracting said latch and operable independently of" said plate-actuating means, and means operable from theopposite side of said casing and adapted to be operated by a key and adapted by a continuous rotation of the key to rotate and Withdraw said bolt and then to Withdraw said latch. i

59. In lockbonstruction, in combination, a casing, a slidable and rotatable bolt therein,

a plate-like'member in said casing movable in a direction lengthwise of said bolt, means for causing said member and sa1d bolt to move together throughout a portion of the movement of said member thereby to extend member within thecasing, said rotary mem-,

ber being, adapted to actuate said plate-like member, and means for Withdrawing said latch an d including means movable With said plate-like member and adapted to be positioned in the path of movement of said rotary member upon the latter having actuated said plate-like member in a direction to effect rotation and retraction of said bolt.

60. In lock construction, in combination, a casing, a slidable and rotatable bolt therein, a plate-like member in said casing movable in a dir ction lengthwise of saidbolt, means for causing said member and said boltto move together throughout a portion of the movement of said member thereby to extend said bolt and adapted throughout a subsequent portion of the movement of said plate member to cause said bolt to rotate, a latch, moans operable from one side of said casing for actuating said plate member to control said bolt, means operable from said side of the casing for retracting said latch and operable independently of said plate-actuating.

member, a device connected to said latch and adapted upon actuation thereof to withdraw said latch, and lever means carried by said plate member and shaped topermit engagement thereof by said rotary member and to engage said device, said lever means being moved by'said sliding plate member, upon the latter beingmoved in a direction to effect rotation and Withdrawal of said bolt, into a 'pesition such that continued rotation of said rotary member engages and actuates said lever means and into a position such that actuation of said lever means causes actuation of said device towithdraw the latch;v A

61. In lock constructiomin combination, a

rotatablebolt, means for rotating and ex- W said partof said rotatable operating me.m

ber to ride out of engagement therewith, a latch, and means for Withdrawing said latch and adapted to be actuated by said rotatable operating member upon continued rotation thereof in a direction to rotate and retract said bolt and upon said part of saidoperating member having disengaged said flanges, said Withdrawing means completing the with drawal of said' latch only after completion of rotation and retraction of said bolt.

62. In lock construction, in combination, a casing, a rotatable bolt extendible out of said casing, a plate in said casing movable in a direction lengthwise of said bolt, means for causing said plate and said bolt to move together throughout a portion of the movement of said plate and adapted throughout another portion of the movement of said plate to cause said bolt to rotate, a latch, means movable with said plate and adapted upon being actuated to Withdraw said latch, a rotary member operable from the exterior of said casing for moving said plate and for actuatingsaid latch-withdrawing means, and means for locking said plate against movement prior to the actuation by said rotary member of said latch-withdmwing means.

63. In lock construction, in combination, a casing, a rotatable bolt extendible out of said casing, a plate in said casing movable in a direction lengthwise of said bolt, means for causing said plate and said bolt to move together throughout a portion of the move of; said plate and adapted throughout another portion of movement. of said iii plate to cause said bolt to rotate, a latch, means movable with said plate and adapted upon being actuated to withdraw said latch, a rotary member operable from the exterior of said casing for moving said plate and for actuating said latch-withdrawing means,

and a member movable substantially transversely of said plate and adapted to interlock with a fixed part of said casing for holding said plate member against movement when said rotary member actuates said latch-withdrawing means.

64. In lock construction, in combination, a casing, a rotatable bolt extendible out of said casing, a plate in said casing movable in a direction lengthwise of said bolt, means for causing said plate and said bolt to move together throughout a portion of the movement of said plate and adapted throughout another portion of the movement of said plate to cause said bolt to rotate, a latch, means movable with said plate and adapted upon being actuated to withdraw said latch, a rotary member operable from the exterior of said casing for moving said plate and for actuating said latch-withdrawing means, and means carried by said plate and adapted to move into engagement with a fixed part of said casing for holding said plate against movement, said last-mentioned means being under the control of said rotary member and being placed in looking position by said ro ta-ry member prior to the engagement by the latter with said latch-withdrawing means.

65. In lock construction, in combination, a casing, a slidable and rotatable bolt, a sliding plate for sliding said bolt relative to said casing, a second plate adapted to slide relative to said first plate, means responsive to relative movement between said two plates for rotating said bolt, a latch, means movable with one of said plates and adapted upon operation to withdraw said latch when said one plate is in predetermined position, a rotary member operable from the exterior of said casing for controlling the actuation of said plates and of said latch-withdrawing means, and means for holding said one plate against movement relative to said casing when said plate has reached said predetermined position.

66. In lock construction, in combination, a casing, a slidable and rotatable belt, a sliding plate for sliding said bolt relative to said casing, a second plate adapted to slide relative to said first plate, means responsive to relative movement between said two plates for rotating said bolt, a latch, means movable with one of said plates and adapted upon operation to withdraw said latch when said one plate is in predetermined position, a rotary member operable from the exterior of said casing for controlling the actuation of said plates and of said latch-withdrawing means, and a sliding member carriedby-one of said plates and mounted to slide into locking engagement with a fixed part of said casing when said one plate has reached said prc lc termined position.

67. In lock construction, in combination, a casing, a slidable and rotatable bolt, a sliding plate for sliding said bolt relative to said casing, a second plate adapted to slide relative to said first plate, means responsive to relative movement between said two plates for rotating said bolt, a latch, means movable with one of said plates and adapted upon operation to withdraw said latch when said one plate is in predetermined position, a rotary member operable from the exterior of said casing for controlling the actuation of said plates and of said latch-withdrawing means, and a sliding member carried by said second-mentioned plate and mounted thereon for sliding movement transversely thereof and adapted to coact to lock said one plate against sliding movementwhen said one plate has reached said predetermined position.

68. In lock construction, in combination, a

crating said mechanism, means on said side of the casing for retracting said latch and independent of said first means, and means on the opposite side of the casing operated by a key and adapted by a continuous rotation of the key first to operate said mechanism to retract and rotate said bolt and then to retract said latch.

69. In lockconstruction, in combination, a slidable and rotatable bolt, a latch, mechanism for sliding and rotating said bolt, a handle for operating said mechanism, a han dle for operating said latch, additional mechanism for withdrawing said latch, and a rotary member adapted by a continuous rotation thereof first to operate said mechanism to retract and rotate said bolt and then to cause actuation of said additional mechanism to retract said latch.

In testimony that I claim the foregoing, I have hereunto set my hand this 2nd day of April, 1923.

. HERMAN HANSEN. 

